问题
选择题
The teacher always tells her students that only if __________ hard _________ achieve success.
A．do they work, will they
B．do they work, they will
C．they work, will they
D．they work, they will
答案
C
题目分析：考查倒装句：句意：老师总是告诉她的学生,只有努力学习了，他们才能获得成功。Only+if引导的时间状语从句放在句首，从句不用倒装，而后面的主句要倒装，选C。